A few miles North-East of the Potteries is the Peak District, and the landscape changes dramatically with steep rocks and moorlands. I often went there on the weekend to go hiking or caving in the karst caves. The caves inspired me in 1990 to try and model the development of them using a Monte-Carlo approach simulating the dissolving processes of the limestone. I discussed later with Tim Burt in Oxford on it. My simulated caves looked really beautiful, but the structures I calculated had nothing to do with reality. My idea to use the model and identify the age of the caves did not work out at all. In the end I scrapped the plan and changed my master thesis topic with Helga Besler at Cologne University to mathematical modeling of particle dispersion, which was related to my work and much easier. In the Peak District, just beside the National Park, is a nice little town called Buxton. It has some springs, and people came here for them in the past. There is still a pretty little opera house and a green house. It is a good base to explore the karst and the moorlands around.
Stopping over in Manchester re-confirmed that most cities which are proud of their soccer club, have not much more to offer (Madrid and Sao Paulo are obvious exceptions).
In Cambridge I met a friend and former colleague from Wardell Armstrong. It has been about 20 years and was nice to "catch up" in the way, as if the 20 years actually did not happen. We enjoyed it a lot over dinner in Midsummer House. I rarely mention restaurants, but this one is quite special and should not be missed when staying in town. The University of Cambridge is similar and different to Oxford. I never did anything academically in Cambridge, so I do not really have an insight. But from my impression Cambridge is more lively and connected than Oxford, without compromising on heritage and ability to focus. But this is really just an impression gathered in a few hours.